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Title:
METHOD OF MANUFACTURING CONNECTING ROD AND CONNECTING ROD
Document Type and Number:
Japanese Patent JP2013204635
Kind Code:
A
Abstract:

To provide a method of manufacturing a connecting rod capable of improving a yield when manufacturing the so-called obliquely split type connecting rod, by rupturing and dividing a connecting rod coarse material.

In manufacture of a connecting rod 1 for manufacturing a connecting rod body 2 and a cap 16 by rupturing and dividing a large end part 7 along a division expected surface P2' having a predetermined angle to a vertical surface P1 of the center line L1 of a connecting rod stem 5, a first notch 21a is formed in a starting point part on the side of becoming a narrow angle in an angle α1 formed by the center line L1 of the connecting rod stem 5 and the division expected surface P2' out of starting point parts of rupture-division set by making a pair on an inner peripheral surface of the large end part 7, a second notch 21b deeper than the first notch 21a is formed in a starting point part on the side of becoming a wide angle in an angle α2 formed by the center line L1 and the division expected surface P2', and the large end part 7 is ruptured and divided along the division expected surface P2' with the first notch 21a and second notch 21b as starting points, respectively.


Inventors:
KATSUNO TAKESHI
TANIGAWA TATSUYA
Application Number:
JP2012071761A
Publication Date:
October 07, 2013
Filing Date:
March 27, 2012
Export Citation:
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Assignee:
FUJI HEAVY IND LTD
International Classes:
F16C7/02
Domestic Patent References:
JP2006125595A2006-05-18
JP2000074067A2000-03-07
Foreign References:
US6357321B12002-03-19
Attorney, Agent or Firm:
Susumu Ito